Sight: An Exposition of the Principles of Monocular and Binocular VisionD. Appleton, 1881 - 275 páginas |
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Página 43
... images . Then , if by direction the patient trans- fers the point of sight to a very near point , n , without changing the direc- tion , we observe that the images a and c do not change , but the image ... right side , N , is adapted to near ...
... images . Then , if by direction the patient trans- fers the point of sight to a very near point , n , without changing the direc- tion , we observe that the images a and c do not change , but the image ... right side , N , is adapted to near ...
Página 68
... right eye , within three or four inches , obliquely outward and forward , so ... image , like a branching , INTERNAL VIEW OF THE RETINA , leafless tree , or ... image of the blood - vessels of the retina ( Fig . 24 ) . These come in at ...
... right eye , within three or four inches , obliquely outward and forward , so ... image , like a branching , INTERNAL VIEW OF THE RETINA , leafless tree , or ... image of the blood - vessels of the retina ( Fig . 24 ) . These come in at ...
Página 78
... eyes . 1 100 2. Blind Spot . This is the spot where the optic nerve enters the ball of the eye . Objects whose images fall on this spot are wholly invisible . It is for this reason that the point of entrance is always placed out of the ...
... eyes . 1 100 2. Blind Spot . This is the spot where the optic nerve enters the ball of the eye . Objects whose images fall on this spot are wholly invisible . It is for this reason that the point of entrance is always placed out of the ...
Página 79
... eye turns more and more in order to regard A , the image of B travels slowly over the retina noseward until it ... right and left eyes respectively . The right is drawn , but the left , being shut , is not drawn , but only its position ...
... eye turns more and more in order to regard A , the image of B travels slowly over the retina noseward until it ... right and left eyes respectively . The right is drawn , but the left , being shut , is not drawn , but only its position ...
Página 80
... eye , look steadily with the right at a spot on the table a little to the left of the piece , and move the piece ... image of A and B on the central spots of the two eyes will be seen in the middle . This , however , is a phenomenon of bin- ...
... eye , look steadily with the right at a spot on the table a little to the left of the piece , and move the piece ... image of A and B on the central spots of the two eyes will be seen in the middle . This , however , is a phenomenon of bin- ...
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Términos y frases comunes
angle axis bacillary layer binocular eye binocular perspective binocular vision camera central spot ciliary muscle circle colors combined images cornea corresponding points cross depth of space distance distant objects distinct divergence double images evident exactly Experiment external images farther fibers field of view gaze Helmholtz heteronymous homonymous horizontal horopter horopteric line identical points Illustrations impression inches inclination interocular space inverted jects law of corresponding left eye left-eye image lens light line of sight look median line middle monocular motion muscles naked eyes nearer nose oblique observer ocular optic axes optic centers optic chiasm optic convergence optic nerve outward parallel perceived perception perfect image perfectly point of sight position projection pupil ray-lines rays refractive represent retina retinal images right and left right eye right-eye image rotation sclerotic screen seen single shut side stereoscope surface tion torsion turn the eyes vergence vertical meridian vibrations visual lines visual result